Got both
Love both. For years, I wanted a 1911 in 45 and a HiPower, both done by the best smith I could find. I got a Colt Commander in stainless and the HiPower. Each went thru sessions with Jim Garthewaite. Not only is his work absolutely superb, the darn things work every time and even look great. I carry both a bunch. Differences, now that I've used these for some years:
The 1911 is absolutely super. (It's on my hip as I type.) There just aren't any flaws. It's fast into action and wonderfully accurate with an outstnding trigger and great ergos. The HP is also a fantastic shooter, but it does have a bit of a different trigger which takes a little getting used to. However, the ergos are fantastic. Even with the 15+1 double stack, my wife shoots it very well as it still fits her smaller hands extremely well; better than ANY other double stck to the point that it's a perfect match. The only thing I do before I carry it in rotation is work with it for 100+ rounds to get the trigger in my head. With that done, I feel very confident that it will do the job for me. I do tend to carry it more in the summer, as the 9mm may not handle heavy winter clothing quite as well as the 45 round.
The other operational differences have been addressed by previous posts. My disconnect 'safety' went away when Jim put in the new trigger. Good ridence.In summary, they're the same, but different.